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(enteral feeding OR enteral nutrition OR parenteral nutrition)
AND (perioperative care OR postoperative)
(("enteral nutrition"[MeSH Terms] OR enteral feeding[Text Word]) OR
("enteral nutrition"[MeSH Terms] OR enteral nutrition[Text Word]) OR
(("parenteral nutrition, total"[MeSH Terms] OR "parenteral nutrition"[MeSH Terms]) OR parenteral nutrition[Text Word])) AND
(("perioperative care"[MeSH Terms] OR perioperative care[Text Word]) OR
("postoperative period"[MeSH Terms] OR postoperative[Text Word])])
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